According to CNBC, Novo Nordisk (NVO), Huntington Ingalls Industries (HII), and ZIM Integrated Shipping Services (ZIM) were identified as among the biggest U.S. premarket movers ahead of the Dec 23, 2025 open, source: CNBC. Traders can reference CNBC’s premarket list to confirm any company-specific headlines and premarket price changes on these tickers before planning entries, stops, and sizing into the opening bell, source: CNBC. CNBC did not cite any direct impact on crypto assets such as BTC or ETH in this premarket note, source: CNBC.